NE Provenance

561 Windsor St

Somerville, MA 02143

Commercial
Owner
Win...
Owner Type
LLC
Tenure
5 yrs
Assessed
$15,422,600
Built
1920
Sq Ft
94,435
Lot
0.63 ac
Bed/Bath
—
Type
Commercial
Elevated Risks20ConditionC1Fire GradeBPermits326Last PermitMar 2026FloodXSurgeCat 2

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561 Windsor St, Somerville, MA 02143— Property Report

Building& Property Details

561 Windsor St is a Nursing Home / Assisted Living commercial built in 1920 located in Somerville, MIDDLESEX County, MA. The building has 94,435 square feet of building area on a 0.63-acre lot.

Flood Zone & Natural Hazard Assessment

561 Windsor St is in FEMA flood zone X. Zone X is outside the Special Flood Hazard Area, meaning the property has minimal flood risk according to FEMA mapping. The property falls within a Category 2 hurricane storm surge inundation zone based on NOAA SLOSH modeling. The FEMA National Risk Index composite rating for this area is Relatively Low. The ASCE 7-22 design wind speed for this location is 123 mph. The ground snow load is 40 psf. The EPA radon zone is 1 (highest potential).

Fire Protection

NE Provenance rates the fire protection for 561 Windsor St at Grade B (Strong fire protection access). The nearest fire station, SOMERVILLE FIRE DEPARTMENT, is 0.2 miles away. This grade reflects fire station proximity, department capabilities, hydrant coverage, and municipal water infrastructure. Properties with Grade A or B typically receive favorable insurance rates due to strong fire protection infrastructure.

Building Permits & Property History

Municipal records show 326 building permits on file for 561 Windsor St. The most recent permit was filed March 17, 2026. In the past five years, 43 permits have been issued. The current municipal assessment is $15,422,600, with $1,255,300 attributed to land and $14,167,300 to improvements. The property last sold on May 28, 2021 for $40,000,000.

SomervilleNeighborhood & Community

561 Windsor St is located in Somerville, MIDDLESEX County, MA. The property is zoned CI (Commercial Industry). The median home value in this census tract is $661,600. Median household income is $151,804. The owner-occupancy rate in the surrounding area is 30%. The property is served by the Somerville school district.

Full Property Intelligence Report

The complete NE Provenance report for 561 Windsor St, Somerville, MA includes over 430 data attributes sourced from 140+ public and proprietary datasets. The full report covers building construction and materials, NEP Condition Estimate derived from permit history, system ages for roof, electrical, plumbing, and HVAC, complete ownership and deed chain with transaction classification, FEMA flood and coastal hazard analysis, environmental contamination screening, and neighborhood demographics. Available as a professional property wallet, PDF report, or structured data export.